What Does PT950 Mean on Jewelry?

PT950 means 95% pure platinum. 'PT' is the chemical symbol for platinum and '950' is the fineness (950 parts per 1,000). It's identical to a plain 950 or '950 PLAT' stamp — the most common purity for platinum engagement rings and wedding bands.

What is a PT950 piece worth?

PT950 is the same premium platinum standard as 950 — heavy, durable, and typically worth more than gold by weight.

How to verify a PT950 stamp

Scan the PT950 mark with the Hallmark Reader to confirm it's solid platinum. Anyone can stamp a mark on metal, so a hallmark alone isn't proof — the fastest way to check is to photograph the stamp and run it through the free Hallmark Reader, then confirm the metal itself with the Is It Real? tool. For a full picture of what your piece is worth, get a free jewelry appraisal. To compare PT950 with every other mark side by side, see the full jewelry stamps and markings chart.

Frequently asked questions